UHD-3901-UC
Dual-Channel 4K UHD Upconverter with Optional HDR Processor

The Densité 3 UHD-3901-UC is a dual-channel HD/3G to 4K UHD upconverter, which is designed to upconvert and pro­cess HD signals for 4K UHD broadcast production.

The UHD-3901-UC features broadcast quality upconverts with high-quality scaler, motion adaptive de-interlacer and color space conversion from ITU-R BT.709 to ITU-R BT.2020. Frame buffer is provided to keep 4K UHD outputs aligned with respect to a reference signal. The 4K UHD signals generated are output on quad link 3G SDI as per SMPTE ST-425-5 and supports two sample interleave (2SI) and square division quad split (SDQS) outputs, which are user selectable. The HD/3G embedded audio and metadata are delayed accordingly to keep synchronization with video before re-embedding in the first 3G link.

There are many benefits to adding the UHD-3901-UC to workflows, enhancing production capabilities. The UHD-3901-UC interfaces with Grass Valley HD cameras and K2 Dyno replay servers (at 6X) to create 4K UHD signals that can then be delivered to a 4K UHD production switcher in a very economical way, instead of using the switcher’s mix effects banks. The optional HDR processor, UHD-3901-OPT-HDR, allows conversion from SDR to HDR formats, sup­porting HLG (ITU-R BT.2100) and PQ (SMPTE ST 2084, ITU-R BT.2100) formats, with conversion between formats.

UHD-3901-UC Insights & Highlights
  • Dual-channel broadcast quality upconverter
  • HD 1080i/720p/3G to 4K UHD 3840x2160 @ 59.94/50Hz
  • Supports quad link 2SI and SDQS output (3G level A & Level B)
  • Integrated frame buffer for output alignment
  • External reference or URS frame reference
  • High-quality scaler and advanced deinterlacer
  • Broadcast quality color conversion (ITU-R BT.709 to ITU-R BT.2020) SDR to HDR HLG (ITU-R BT.2100.0) and PQ (SMPTE ST 2084) optional processing
  • Embedded audio and metadata delay and synchronization

SDI (Inputs/Outputs)

Physical: 10 BNC connectors: 2 IN, 8 OUT

SDI Standard: 

  • SMPTE ST 292 (1.485, 1.485/1.001 Gb/s) 
  • SMPTE ST 424 (2.970, 2.970/1.001 Gb/s) 

Supported formats: 

  • HD: SMPTE ST 274: 1080i59.94, 1080i50 
  • HD: SMPTE ST 296: 720p59.94, 720p50 
  • 3G: SMPTE ST 425 level A (mapping 1), level B: 1080p59.94, 1080p50
  • 4K UHD: quad link 3 Gb/s SMPTE ST 425-5: 1080p59.94, 1080p50

Cable length (Belden 1694A): 

  • HD: 150m (492 ft.) at 1.485 Gb/s 
  • 3G: 100m (393 ft.) at 2.970 Gb/s 

Return loss: 

  • >15 dB up to 1.5 GHz 
  • >10 dB up to 3 GHz 

Jitter: 

  • HD: <0.2 UI (alignment jitter) 
  • 3G: <0.3 UI (alignment jitter)

Reference Input 

Signal: SMPTE ST 170/SMPTE ST 318/ITU 624-4 blackburst 

Return loss: >30 dB up to 5.75 MHz

Video Processing Performance 

Signal path: 10 bits minimum 

Latency: 1 frame in all modes

Electrical 

Power: 37.5W maximum

Densité 3 Frame Densité 3+ Frame Description 
UHD-3901-UC UHD-3901-UC Dual-Channel 4K UHD Upconverter
UHD-3901-3TRP   Triple rear connector panel 
  UHD-3901-3+DRP Double rear connector panel for Densité 3+
Options
UHD-3901-OPT-HDR High Dynamic Range processing option

Densité UHD-3901-UC: Dual-Channel 4K UHD Upconverter with Optional HDR Processor Data Sheet

The Densité 3 UHD-3901-UC from Grass Valley, a Belden Brand, is a dual-channel HD/3G to 4K UHD upconverter, which is designed to upconvert and process HD signals for 4K UHD broadcast production.

The UHD-3901-UC features broadcast quality upconverts with high-quality scaler, motion adaptive de-interlacer and color space conversion from ITU-R BT.709 to ITU-R BT.2020. Frame buffer is provided to keep 4K UHD outputs aligned with respect to a reference signal.

Posted May 12 2017 (GVB-1-0641B-EN-DS) File Size: 2.1 MB

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